https://devzone.nordicsemi.com/f/nordic-q-a/22358/about-long-formatHi. I have a question. I tested that nrf52 get datas from sensors. But the code was not moved well, I made code to test bit shift. Please see my code. #include &lt;stdio.h&gt; #include &lt;stdbool.h&gt; #include &lt;stdint.h&gt; long a = 0; a = (1&lt; 24) |en-USTelligent Community 13Fri, 26 May 2017 04:36:39 GMThttps://devzone.nordicsemi.com/thread/87889?ContentTypeID=1Fri, 26 May 2017 04:36:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:029f304a-ff1c-464c-8128-b0348ed61d29Sagisawa Yukichi<p>Thank you! I made a mistake:(</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/87888?ContentTypeID=1Fri, 26 May 2017 04:23:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ba6c386f-9899-4c68-9dc6-c95f1ed67779RK<pre><code>(1&lt; 24) </code></pre> <p>that&#39;s not a shift, it&#39;s a comparison which will return true which is usually &#39;1&#39;, so your first two expressions are equivalent to</p> <pre><code>1 + 2 &lt;&lt; 16 + 4 &lt;&lt; 8 </code></pre> <p>== 1 + 131,072 + 1,024 = 132,105</p> <p>the last expression just evaluates to &#39;1&#39;, the other two bits are zero</p><div style="clear:both;"></div>